Form tie for wall structures



Oct. 7, 1952 1 BRACEWELL 2,612,674

FORM TIE FOR WALL STRUCTURES Filed sept. 12. 1947 may be brought into contact with my spacer I8, and when tied or laced with wire, the annular grooves or serrations will prevent the wire from slipping along the spacer and occasionally allowing the form to slip out of line, and also prevent the steel reinforcing rods from leaning toward one of the outside wall forms.

My improved wall tie is installed as shown in Figs. 2 and 3 of the drawings. After the side members I of the form have been'attached to the studs II, I simply strike chalk lines 20, forming any desired size of squares on the inside vsurface of the side members I0.

Over the inter#VA section of these chalk lines 20. I attach the collars s I6, using ordinary nails 2| through the mounting holes I1. I f

As can be seen in Fig. V4, the collars I6 are ofv` rectangular shape and are Preferably made of some cast metal. Each collar I6 is further'vprovided with four side faces which recede from the outside face of thecollar, thus forming sufficient draft for its easy removal from the finished concrete wall. I have also provided lon these four faces small projections 22 which leave recesses in the finished wall suitable for grouting purposes.

Through the center of the collar element I6, I have provided a hole 23 of suflicientdiameter to slidably receive the ends of the tubular spacer members I8. 1,. 1,

When the desirednumberof collars havepbeen attached to the side members I0 of the ferm, I use the intersecting points of the `chalkedlines as a mark, andwith -an ordinary ..wood bit 2li drill a clearance hole forthe `tie ,rod as shown in After drilling all of the clearanceholes forthe tie rods in one of the sidemembers of the form, I then insert one endif the spacer members I8 into the holes 23 of the collars yI 6,A andthen place the other collars on'the as shown in Fig. 'l

The opposite side Tof; the form IIl' is then brought against ithe projecting collars -and temporarily braced..V Since the bearing ;surface in the collar is suiicienttosilpportthe spacer members I8 in .a l 1 ori zontal position, it isA not necessary to nailvthe lopposite collars tothe side members IIJ'.

As can be seen in FTig. 3,Iuse the same wood I bit 24 directed fromthe outside of the form, and

using the inside-Wall portion of the spacer memlber I 8 as a guide,bore the opposite clearance 1 battens I2 aretaken off and the side members I6 and I and the studsr II are taken down.

Since the collar members l6 have been previously coated with algrease4 preparation and provided with sufficient? draft, they may easily beremoved from thefwall I3, leavinga construction as shown in theupper portonof Fig. l.

Into the open ends of thetubular spacers I8 a wooden plug 26 may bel driven which serves as ,a ground for attaching partitions, fixtures, moldv ing, or any additionalconstruction where grounds are necessary.

other. ends of` the spacers In the recess left in the concrete wall by the removal of the collar members I6, I simply apply a grout 2l, thus finishing both sides of the wall smooth.

It will be noted that my tubular spacer member I8 may be used as a chase for wiring conduit, piping or the like, or for any purpose that might be suitable for its inside diameter. It will be furthernoted that these additional uses of my wallitieA will not interfere with its general purposeas described.

Reference to Fig. 6 of the drawings I have been prefabrcated and my invention used to separate the side members of the form at a desired wall thickness, the collars I6 on both sides "being'securely attached as formerly described,

vand the entire assembly lowered over upwardly ing .28.,

extending reinforcing rods in an existing footv The novel feature in the use of my invention as shown in Fig. dis that the reinforcing rods l gliinay be either.l bent overthe spacer members lgforrnay be tackwelded to the same, thus supplying additional reinforcement to the finished wal1. fri".

In Eig. v7 the spacergelement i8 is shown in l modified form.' This modified spacer I8 is protangularhead 3 I arranged to be slidably inserted intomthespacer I8' through the slots 34. This typebf construction is particularly advantageous Where an excavated foundation Ytrench is made too narrow to permit the insertion or Withdrawal of a long; tie rod through vthe Wall. In such case, anoperatorwould use a pair of the modified tie rods 36, inserting the heads 3l thereof through the slots 34 ofthe variousspacers I8 and turn the rods Sil approximately ninety degrees to right or left to where the/back portion of the heads 3l would come in ,contact with the inner wall surface of the restricted ends of the spacer members I6. The operator would then be able to jack the rodstight and retain them in this po- -.sitio/ln by setting the restraining collars I6. After `the wall has been poured and set, the form may and slipping the heads 3l be easily dismantled by loosening the collars I5 of the tie rods 30 out of the slots 3Q.

Anotherv-mcdiiicationof the above mentioned structure is the application of a resilient washer 32 which is provided with a square hole 33 adapted to'be. slipped ,over the collar I6 as the form is assembled. This washer 32 is preferably of rubberized material and of the same thickness as the collar` I6.-

When-theconcrete is subsequently poured between the forms, the added weight will simply contract. the resilient washers 32, yet still allow them to be easily removedwhen the Wall has set and the forms areitaken down. While itis not essential, it is preferredthat the Washers 32 be coated with a, grease preparation before use to insuretheireasy removal from the wall. vAfter removal of the forms I0 and I, the recesses in thenished Wall leftby the collars I6 and Washers 32 vmay be grouted or plugged as described in the yuse ofv-.the preferred form of my invention.

While ;Ihavezdescribed my invention in deltail both in preferred and modified form, it is e 5r spirit and scope as dened by the following claims.

I claim: 1. A mold structure comprising a pair of spaced mold forms, one of said forms having an aper- 4tubular body structure toward each end thereof and ending in a nat annular face surrounding the ends of said tubular body structure and offset inwardly from each end of the tubular body structure for a distance substantially equalv to f. the thickness of the aforesaid apertured plates,

each of the projecting tubular ends of said spacer member being extended through the apertures in the apertured plates, and a tie bar projecting through said mold forms and through said tubular body structure for securing said mold forms together, said mold forms when separated from said spacer member operating to withdraw said aperturecl plates from the tubular ends of said spacer member and providing an annular hollow vspace in the molded material around the ends of said tubular body structure.

2. A mold structure as set forth in claim 1, in which said apertured plates are provided with resilient members encircling said plates which have a peripheral contour at their outer extremities that conform with the shape of said flanges.

3. A mold structure as set forth in claim l, in which the flat annular faces adjacent each end of said spacer member extend in planes substantially parallel with the plane of the inner faces of the mold forms.

v JOHN L. BRACEWELL.

REFERENCES CITED The following references are of record in the file of this patent:

y UNITED STATES PATENTS Number Name Date 779,288 Lane Jan. 3, 1905 929,470 Neil July 27, 1909 1,122,982 Mumford Dec. 29, 1914 1,229,365 Wiegand June 12, 1917 1,309,084 Zimmerman July 8, 1919 1,552,334 Mosher Sept. 1, 1925 1,665,649. Whitescarver Apr. 10, 1928 1,850,402 Lampert Mar. 22, 1932 1,907,618 Umbach et al. May 9, 1933 2,029,147 Anderson Jan. 28, 1936 2,162,592 Schenk June 13, 1939 2,234,784 Stolz Mar. 11, 1941 2,261,247 Girard Nov. 4, 1941 2,315,634 McCall Apr. 6, 1943 

